Statistical GlossaryJulian_pie_graph.gif


Cluster: A cluster is a small group or bunch of something
Outliers: Outliers are observations that are distant from the rest data.
Trends: Trends is a statistical technique to aid interpretation of data.
Dot Plot: A Dot Plot is a graph that shows dots instead of columns
Tally Chart: A Tally chart is a chart that you use to record data before putting it on a graph.
Pictographs: Are graphs that show pictures instead of bars or columns
Bar Graphs
: There are four types of bar graphs. Histogram, column, vertical and double bar graphs.

Histograms: A histogram Is a type of bar graph that shows continuous data.
Strip Graph : a strip graph shows proportions or percentages as part of a strip
Pie Graph : A pie graph shows percentages of the data in a circular graph.
Steam and leaf graph
Scatterplot :is a graph that shows data that is placed on a co-ordinate table
Box and Whisker graphs: are used to find the median and upper and lower quartiles.
Line Graph:is used to show measurements like height and weight
Mean :Is used to show the average number in a series of data
Median:Is the number in the middle in an ordered series of data
Mode:Is the most occurring number in a series of data
Range:Is the difference between the highest and lowest numbers


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Inter quartile range: It is the middle 50%(25 to 75%) of a series of data.
Implications: the conclusion that can be drawn from something, although it is not explicitly stated.
Variables: are things that change suddenly and unpredictably.
Sample :a small group of data
Surveying: Surveys are used to gather a group of data .

Patterns in data: groups of data that are in a pattern.
Relationships in data: is a connection between the data.
Frequency table : shows the frequency of data in a group.
Conclusions: the end statement in an investigation
Generalisations: a principle, a theory etc. with general applications